A252951 Number of (n+2)X(7+2) 0..2 arrays with every consecutive three elements in every row, column and nw-se diagonal having exactly two distinct values, and new values 0 upwards introduced in row major order

776160, 5419521, 52118784, 603797472, 7763464440, 104852356227, 1453390671726, 20393839045575, 287973042727734, 4079571555719709, 57885342203674728, 821897508461611833

Offset

1,1

Comments

Column 7 of A252952

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=1
..0..0..1..0..0..2..2..0..0....0..0..1..0..1..0..0..2..0
..2..0..0..1..1..2..2..0..2....1..1..2..2..0..0..1..0..0
..2..2..1..1..0..1..0..1..0....0..1..1..2..1..1..0..0..1

Crossrefs

Sequence in context: A151562 A023348 A089007 * A145687 A244071 A157357

Adjacent sequences: A252948 A252949 A252950 * A252952 A252953 A252954

Keyword

nonn

Author

R. H. Hardin, Dec 25 2014

Status

approved